Abstract
Pure methanol (m) and methanol water (mw) extracts of 5 plants namely: peppermint, eucalyptus, lavandula, Russian knapweed and datura were screened for their antifungal ability against Alternaria alternata, the causal agent of Alternaria leaf spot of potato at 5, 10 and 15% concentrations in vitro. Fungicide mancozeb 0.2% was also used for better comparison. Poisoned food technique and spore germination assay method were used to evaluate the antifungal efficacy of plant extracts. Present findings showed that methanol extracts of eucalyptus, peppermint and lavandula had impressive antifungal effects in inhibiting the mycelial growth as well as spore germination of the pathogen. It was also found that methanol extracts were quite more effective than methanol water extracts in this regard. Methanol extracts of peppermint (15%), lavandula (15%), peppermint (10%) and eucalyptus (15%) demonstrated promising ability in inhibiting the mycelial growth of A. alternata by 0.13, 0.40, 0.43 and 0.50 cm, mycelial growth respectively, while majority of methanol water extracts had either less or no effects in this connection. Spore germination of A. alternata was prominently reduced by methanol extracts, while those of methanol water extracts had very less effects in this regard. Mancozeb (0.2%), methanol extracts of eucalyptus (15%) and peppermint (10%) by 2, 6 and 7% spore germination were best, while methanol water extracts of datura 10, 15 and 5%, lavandula 15 and 10% and also Russian knapweed 5% represented no effect and by 91, 89, 87, 87, 85 and 85% spore germination were at par with control. Findings from this study confirmed that plant extracts can be used as less hazardous natural fungicides in controlling plant pathogenic fungi, thus reducing the dependence on the synthetic fungicides. Methanol extracts of peppermint, eucalyptus and lavandula might be promising materials for natural formulations in controlling Alternaria leaf spot of potato in the field.
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Claims 13
Claim · model-written summary
Methanol extracts of eucalyptus, peppermint and lavandula inhibited mycelial growth of Alternaria alternata on potato.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- methanol extracts of eucalyptus, peppermint and lavandulae1
- Interactor
- Alternaria alternata
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Alternaria alternatae2pathogen - Outcome
- mycelial growthe1
- Direction
- inhibitinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e1“methanol extracts of eucalyptus, peppermint and lavandula had impressive antifungal effects in inhibiting the mycelial growth as well as spore germination of the pathogen”
e2“against Alternaria alternata, the causal agent of Alternaria leaf spot of potato”
t0“Alternaria Leaf Spot of Potato”
Claim · model-written summary
Methanol extracts were more effective than methanol water extracts in antifungal effect against Alternaria alternata on potato.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- methanol extractse3
- Outcome
- antifungal effectse1
- Direction
- quite more effectivee3
- Comparator
- methanol water extractse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“methanol extracts of eucalyptus, peppermint and lavandula had impressive antifungal effects in inhibiting the mycelial growth as well as spore germination of the pathogen”
e3“It was also found that methanol extracts were quite more effective than methanol water extracts in this regard”
t0“Alternaria Leaf Spot of Potato”
Claim · model-written summary
Methanol extract of peppermint (15%) inhibited mycelial growth of A. alternata on potato by 0.13 cm.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- peppermint (15%)e4
- Interactor
- A. alternataAlternaria alternatae4pathogen
- Outcome
- mycelial growthe4
- Direction
- inhibitinge4
- Value
- 0.13e4
- Qualifier
- cme4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Methanol extracts of peppermint (15%), lavandula (15%), peppermint (10%) and eucalyptus (15%) demonstrated promising ability in inhibiting the mycelial growth of A. alternata by 0.13, 0.40, 0.43 and 0.50 cm, mycelial growth respectively”
t0“Alternaria Leaf Spot of Potato”
Claim · model-written summary
Methanol extract of lavandula (15%) inhibited mycelial growth of A. alternata on potato by 0.40 cm.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- lavandula (15%)e4
- Interactor
- A. alternataAlternaria alternatae4pathogen
- Outcome
- mycelial growthe4
- Direction
- inhibitinge4
- Value
- 0.40e4
- Qualifier
- cme4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Methanol extracts of peppermint (15%), lavandula (15%), peppermint (10%) and eucalyptus (15%) demonstrated promising ability in inhibiting the mycelial growth of A. alternata by 0.13, 0.40, 0.43 and 0.50 cm, mycelial growth respectively”
t0“Alternaria Leaf Spot of Potato”
Claim · model-written summary
Methanol extract of peppermint (10%) inhibited mycelial growth of A. alternata on potato by 0.43 cm.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- peppermint (10%)e4
- Interactor
- A. alternataAlternaria alternatae4pathogen
- Outcome
- mycelial growthe4
- Direction
- inhibitinge4
- Value
- 0.43e4
- Qualifier
- cme4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Methanol extracts of peppermint (15%), lavandula (15%), peppermint (10%) and eucalyptus (15%) demonstrated promising ability in inhibiting the mycelial growth of A. alternata by 0.13, 0.40, 0.43 and 0.50 cm, mycelial growth respectively”
t0“Alternaria Leaf Spot of Potato”
Claim · model-written summary
Methanol extract of eucalyptus (15%) inhibited mycelial growth of A. alternata on potato by 0.50 cm.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- eucalyptus (15%)e4
- Interactor
- A. alternataAlternaria alternatae4pathogen
- Outcome
- mycelial growthe4
- Direction
- inhibitinge4
- Value
- 0.50e4
- Qualifier
- cme4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Methanol extracts of peppermint (15%), lavandula (15%), peppermint (10%) and eucalyptus (15%) demonstrated promising ability in inhibiting the mycelial growth of A. alternata by 0.13, 0.40, 0.43 and 0.50 cm, mycelial growth respectively”
t0“Alternaria Leaf Spot of Potato”
Claim · model-written summary
Methanol extracts reduced spore germination of A. alternata on potato more than methanol water extracts did.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- methanol extractse5
- Interactor
- A. alternataAlternaria alternatae5pathogen
- Outcome
- spore germinatione5
- Direction
- prominently reducede5
- Comparator
- methanol water extractse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Spore germination of A. alternata was prominently reduced by methanol extracts, while those of methanol water extracts had very less effects in this regard”
t0“Alternaria Leaf Spot of Potato”
Claim · model-written summary
Mancozeb (0.2%) gave the best reduction of spore germination of A. alternata on potato, with 2% germination.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Mancozeb (0.2%)e6
- Outcome
- spore germinatione6
- Direction
- were beste6
- Value
- 2e6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Mancozeb (0.2%), methanol extracts of eucalyptus (15%) and peppermint (10%) by 2, 6 and 7% spore germination were best”
t0“Alternaria Leaf Spot of Potato”
Claim · model-written summary
Methanol extract of eucalyptus (15%) gave the best reduction of spore germination of A. alternata on potato, with 6% germination.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- eucalyptus (15%)e6
- Outcome
- spore germinatione6
- Direction
- were beste6
- Value
- 6e6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Mancozeb (0.2%), methanol extracts of eucalyptus (15%) and peppermint (10%) by 2, 6 and 7% spore germination were best”
t0“Alternaria Leaf Spot of Potato”
Claim · model-written summary
Methanol extract of peppermint (10%) gave the best reduction of spore germination of A. alternata on potato, with 7% germination.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- peppermint (10%)e6
- Outcome
- spore germinatione6
- Direction
- were beste6
- Value
- 7%e6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Mancozeb (0.2%), methanol extracts of eucalyptus (15%) and peppermint (10%) by 2, 6 and 7% spore germination were best”
t0“Alternaria Leaf Spot of Potato”
Claim · model-written summary
Methanol water extracts of datura, lavandula and Russian knapweed had no effect on spore germination, which stayed at par with control.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- methanol water extractse7
- Outcome
- spore germinatione7
- Direction
- no effecte7
- Comparator
- controle7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“methanol water extracts of datura 10, 15 and 5%, lavandula 15 and 10% and also Russian knapweed 5% represented no effect and by 91, 89, 87, 87, 85 and 85% spore germination were at par with control”
t0“Alternaria Leaf Spot of Potato”
Claim · model-written summary
Plant extracts can be used as less hazardous natural fungicides for controlling plant pathogenic fungi (author conclusion).
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- less hazardous natural fungicidese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Findings from this study confirmed that plant extracts can be used as less hazardous natural fungicides in controlling plant pathogenic fungi”
t0“Alternaria Leaf Spot of Potato”
Claim · model-written summary
Methanol extracts of peppermint, eucalyptus and lavandula might be promising materials for natural formulations to control Alternaria leaf spot of potato in the field.
- Taxon
- potatoSolanum tuberosume2
- Outcome
- natural formulationse2
- Qualifier
- in the fielde2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Methanol extracts of peppermint, eucalyptus and lavandula might be promising materials for natural formulations in controlling Alternaria leaf spot of potato in the field”
The same questions in other papers
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- no effect
- negative
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4 papers in the same direction as this paper · 65 in the opposite direction
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See all 70 papers →botanical · Alternaria alternata · Solanum tuberosum (potato)Results agree
2 papers in the same direction as this paper
- positive
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.